That is the opinion of former tennis players turned tennis pundits the McEnroes.

The McEnroe brothers of tennis have talked up Andy Murray’s chances of winning the US Open – then knocked out the Scot down by insisting he will never be in the same league as Roger Federer, Novak Djokovic and Rafa Nadal.

This is despite Murray's dominance of men's tennis for the last 2 months.

Murray begins his quest for a second US crown against Czech Lukas Rosol on Tuesday, and is regarded as favourite for the Flushing Meadows title after his triumphs this summer at both Wimbledon and in the Olympic Games.

The McEnroes believe Djokovic's injury will not hamper him from dominating the US open grand slam.

And with Djokovic, who starts his campaign on Monday, struggling with a wrist injury and admitting that he has had to contend with problems in his personal life, John McEnroe believes Murray has a great chance.

But the brothers insist that Murray will always fall short. Primarily because of certain major flaws in his overall game. But he and his brother Patrick, a former US Davis Cup captain, insist Murray still falls just short of the trio of superstars who have dominated tennis for more than a decade.

“But I don’t think he has the type of game that can ­dominate week in, week out, for a long period of time, the way that those other three guys were able to do.